Dutch Elm Disease Ophiostoma ulmi Home 9 Invaders 9 Category: Forest Pests & Pathogens ( Page 2 ) Background Dutch elm disease is caused by a fungus (Ophiostoma ulmi) that has been killing native elm trees in North America. The disease is spread...
Oak Wilt Bretziella fagacearum Home 9 Invaders 9 Category: Forest Pests & Pathogens ( Page 2 ) Background Oak wilt is a fungal pathogen (Bretziella fagacearum) killing thousands of oak trees in North American forests and woodlands each year. The...
Sudden Oak Death Phytophthora ramorum Home 9 Tag: Sudden Oak Death Background Sudden oak death is a disease affecting species of trees caused by a fungal-like organism. Established in localized areas of North America, the native range of the disease,...
Thousand Cankers Disease Geosmithia morbida Home 9 Invaders 9 Category: Forest Pests & Pathogens ( Page 2 ) Background Thousand cankers disease is a new threat that has been linked to the death of eastern black walnut trees in the United States...
Hemlock Woolly Adelgid Adelges tsugae Home 9 Tag: Hemlock Woolly Adelgid Background The hemlock woolly adelgid (HWA) is an aphid-like insect that attacks and kills hemlock trees by feeding on nutrient and water storage cells at the base of needles. It is...
Tubenose Goby Proterorhinus semilunaris Home 9 Invaders 9 Category: Fish Background The Tubenose Goby is a small, bottom-dwelling invasive fish. Native to rivers and estuaries of the Black and Caspian Sea basins, it was first discovered in North...
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